/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.geode.modules.util;

import org.apache.geode.cache.Declarable;
import org.apache.geode.cache.execute.Function;
import org.apache.geode.cache.execute.FunctionContext;
import org.apache.geode.cache.execute.RegionFunctionContext;

import java.util.Properties;

public class RegionSizeFunction implements Function, Declarable {

  private static final long serialVersionUID = -2791590491585777990L;

  public static final String ID = "region-size-function";

  public void execute(FunctionContext context) {
    RegionFunctionContext rfc = (RegionFunctionContext) context;
    context.getResultSender().lastResult(rfc.getDataSet().size());
  }

  public String getId() {
    return ID;
  }

  public boolean hasResult() {
    return true;
  }

  public boolean optimizeForWrite() {
    return true;
  }

  public boolean isHA() {
    return true;
  }

  @Override
  public void init(Properties arg0) {
  }
}
